thanks for taking the time to writing another artical Greg, and updating those of us who already knew of the round.
with that new norma round brass do you think the standard extractor will be ok?
cheers

Not unless you used a factory 338 Lapua Remington for the build, and as that would be a long action it would kind of defeat the purpose. You can use any short action Remington or Model 7, regardless of chambering, but you will still need to fit a Sako type extractor and open the bolt face.
Greg

Keep us updated on the new brass option. I am really wanting to hear more.

Tank

__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

Great article!! sounds like the perfect high country round round!! I dont have the capabilities to machine the brass so I doubt I'll ever build one, but It's nice to dream. i really enjoyed hearing about all the field testing and hunting. Great article.

In your article you claim that the .378 Weatherby is based off .416 Rigby? How did you arrive at this info.

The .378 Weatherby is a belted magnum whereas the .416 has NO belt.?

Very interesting cartridge and article by the way....

Corey,
Absolutely the 378 Weatherby is based on the 416 Rigby. Yes they added a belt and the traditional Weatherby double radius shoulder, but the 416 Rigby case was the inspiration. This is common knowledge.

The 338 Norma brass has been going real well, lasting 20 loads at 65,000psi so far. I haven't been able to kill a case yet. And it has eliminated the expanding and full length turning then necking down again case forming steps. Now it is a simple neck down, shorten, neck turn, anneal and fireform with Shotgun powder.
Greg